Source of Support: None, Conflict of Interest: None
One hundred and sixty subjects in the general population were studied for the possible role of ABO blood groups in the infection and asymptomatic carriage rate of Pityrosporum ovale. Out of 160, 149 were positive for P. ovale in culture. Of them, 57 had dandruff and 6 had seborrhoic dermatitis. The remaining 86 were harbouring P. ovale asymptomatically. The rate of infection was almost in identical proportion with the rate of asymptomatic carrier state of P.ovale. Our study also revelated that blood group O subjects may be the most susceptible, followed by AB group. The incidence of dandruff was relatively high in males when compared to females.